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Fix Twemoji URLs with ZWJs being generated incorrectly (#865)

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Ethan 2022-06-12 08:46:39 +10:00 • committed by GitHub
parent aca94ddccb
commit ddc7f921bd
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1 changed files with 13 additions and 7 deletions
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20
DiscordChatExporter.Core/Discord/Data/Emoji.cs
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@ -24,13 +24,19 @@ public partial record Emoji(
public partial record Emoji
{
private static string GetTwemojiName(string name) => string.Join("-",
name
.GetRunes()
// Variant selector rune is skipped in Twemoji names
.Where(r => r.Value != 0xfe0f)
.Select(r => r.Value.ToString("x"))
);
private static string GetTwemojiName(string name)
{
var runes = name.GetRunes();
return string.Join(
"-",
// Variant selector rune is skipped in Twemoji names, except when the emoji also contains a zero-width joiner.
// VS = 0xfe0f. ZWJ = 0x200d.
runes.Any(r => r.Value == 0x200d)
? runes.Select(r => r.Value.ToString("x"))
: runes.Where(r => r.Value != 0xfe0f).Select(r => r.Value.ToString("x"))
);
}
private static string GetImageUrl(Snowflake id, bool isAnimated) => isAnimated
? $"https://cdn.discordapp.com/emojis/{id}.gif"